Antifriction bearing



' ifi-gz May 29, 1923. 1,456,997

-ANTIFRICTION EEEE NG I IZ- u 2 Sheets-sheet 1 &\\\\\\\\\\\\\\\\\ @4M/Mf Patented May29, 1923. y i

1 vmurs l.1 Lewi- JoHN F. oCoNNoa, or CHICAGO, ILLrNois, nssIGNo'n 'rowrLLrAM n. Mig-NER, or

, CRAZY, Nnw YORK. f i i Y. l

' ANTrFRIC'rIoN BEARING.

Appiiauon sied nay 7,

To :all/whom t may concern.' j l Be it known that L'JoHN F. (TCONNOR, acitizen of the United States, residing at Chicago, in the county of Cookand Sbtate of Illinois, have invented a lcertain new and usefulimprovement in' Antifriction Bearings, of which the following is a full,clear, concise, and eXactdescription, reference be-k ing had to theaccompanyingl drawings,- forming a part of this specification.

This invention relates to improvements in anti-friction bearings.

The object of the invention is to provide an efficient stronganti-friction bearing especially adapted for use as a side bearing onrailroad cars, the bearing being so designed that it may be attached tothe under side of a body bolster and the anti-friction element renderedself-centering under the in iiuence of gravity and without theaid of'springs and other devices likely to quickly,4

get out of order. Y

In the drawings forming a. partofthis specification, Figure 1 is avertical, sectional view taken parallel to the Vlength .of therailroadcar and transversely ofthe body and truck holsters thereof, showing myimpiove-V ments in connection therewith. Figure 2 is a vertical,sectional view taken lengthwise of the bolsters and correspondingsubstantially to the line 2 2 of Figure 1.` AndFigures 3 yand 4c areviews similar'to Figures 1 and 2 respectively/but illustrating another:em-

bodiment of the invention, Figure-A:V corre'A spending tol the lire 3-l.

Referring first to the construction illustrated inFigures 1 and 2, 10denotes. the upsection line l-v of Figper portion of a truck bolster and11 the under side' of an opposed bodybolster.A As i shown, the improvedbearing is attachedjto theunder side of the' body bolster l1/andthebearing comprises, broadly, a housing' or retaining member A; ananti-friction elementv proper B; vapair of rollers Cf-C; .roller tracksD D; .a journal or axle pin centering llugs F--F; andan insert bearingor wear plate G.

The retaining member A is preferably.A in

thel form'of a malleable casting having a top flatwall 10;centrallydisposed parallel side walls 11- 11; sloping top walls 12 ateach end; supplemental ybut offset side walls 134-13 lat each' 'endgandVtransversely eig-v "izij serial No. 467,549. f

tending vertical 1 4-14 on opposite sides: Centrally of the member A,said top wall 10 is thickened as indicated at 10a in l.

Figure 2 so as to provide ample strength to sustain the; compression vstresses 'resulting when the vbearing `is in operation. l thickenedsection -10ais recessed as indicated.` 1 at 10b lso 'as to accommodatethe rectangularY f hardened wearplate G, the under side of thelatterproviding an. upper downwardly fac'-` ing` bearing's'urfac'eforthe element B.v

rlhe anti-friction element B, as shown,` is

inthe form of a gravity rocker of generally triangular form havinganupper cylindrical 'A i i bearingsurface 15 anda lowercylindrical 16.Flat surfaces 18 are formed lon the" ele-y 'l ment B the Ysame extendingpreferably tangential to the bearingsurface 15. "Said fiat surfaceslSas'shownbest the dotted/ 1 position of the element B 'iniFigure 1,5 areadaptedto engage the inner faces of the sloping top walls `12to-limitythe movement 1 of the'element B in either direction-,from v centralnormal position.

"The roller tracksvl), as shown', are the i I form -of rivets extendinghorizontally and mounted at theirends -in the vertical walls llfof thememberA, there being one of 'such track-forming rivets D vonfjeach sideof the i i member A. VSaid track-,formingy rivets DL.

are located belowl in Figure 1.; The rollers A like `construction,"oneat eachl side ofthe the said .center17 asA shown member vlilachofsaidrollers C is prefgroovelt) r conforming'to the circumference ofthetrack-forming rivets YD -so that-said rollers C will notnsilipoffifintheir rolling movementsv back andforth thereon. f

theiaxle or journal pinH E,;the latter Vbeing C-'lby' provided with an`annular peripheral .9 5

also extended through the'element B and having its axis coinciding withltheco'iiiinon,

axis of the two surfaces 15 and 16.

ing' surface 15 as shown in Figure 1.

The? diametersofthe rollersC are'fsuchthat thev upper 'surfaces of theyrollersf C are normally i015 disposedfslightly below the levelof the.bean y v `Unthe interiorofthe lretaining 'member near the top thereofand on each side, is provided a vertically extending guideway indicatedat 20, said guideways 20 being on the outer side or the bearing plate G.The lugs F worlr within said guide recesses 20, theliigs F beingpreferably formed integrally with the anti-friction element B andextending upwardly above the surface 15. Each of said lugs F has a topfiat edge 2l, downwardly diverging edges 22-22 merging into-roundedportions 23-23 from which extend downwardly converging edges 24e-24. Thecontours of the edges of the lugs F are so made that, inl any angularposition of the anti-friction element B, the distance across said lugVtaken horizontally in line with the points on the vertically extendingfaces of the guide grooves 20 in contact with said lug or the vnearestthereto, will always substantially equal. the horizontal width of theguide grooves 20, lilith this arrangement, Vthe anti-friction element Bis free to roll on the plate Gr back and forth without inter'- ferencefrom the lugs F but the lugs F positively prevent the element B frombeing shifted bodily without rolling, relatively to the member B.l Inother words; whenever the element B rocks during its return move.-mentfit necessarily returns to central normal position.

From the preceding description it will be observed that'the element B issupported through `the pin E on the rollers C. Consequently, at the endof any movement and upon removal of the actuating pressure, the weightof thev element B is transferred to the rollers C and the latter arerolled Aback to their central normal position under the influence of theelement B which swings downwardly about the pin E as a center, under theinfluence of gravity. l

ln the construction,illustrated in Figures 3 and et, the generalarrangement of parts is the saine as shown in Figures l and 2. In theform shown in Figures and 4, however,

only one roller C is employed, the saine being located centrally of theanti-friction element B. Themlatterris centrally slotted as indicated at30 to accommodate said roller C and also the roller track-forming memberD. The latteris in the form ofa U-bolt, the upper ends of the arms ofwhich are secured to the retaining member A by nuts 3l-31- The` U-boltlprovides a'lower horizontally extending 'track portion 32 upon whichvthe roller D is adapted to roll back and forth.

The slot` 30 within the element B is made` y large enough so as to avoidany interference with the bolt D when the element B rocks back andforth. journal or axle pin E is extended through the roller C and theelement B. so as to transfer the weight off the latter to the roller.@entering lugs F', which are formed on the element B', coopcrate withcorresponding guide grooves vin the retaining member A the same as inthe case of the construction shown in Figures l and 2.

Although I have herein shown and described what l now consider thepreferred manner of carrying out the invention, the

-same is merely illustrative and I contemthereof is elevated when rolledto either vsidey of normal position ;a roller-track carried by saidvmember; yaI roller supported on said track; means for supporting saidelement from. a. point above its center of weight on said roller; andcooperating means on said member and element arranged topreveiit bodilyshifting of said element with respect to said member but permitting freerolling movement thereof, said means von said element being independentof said roller.

2. ln an anti-friction bearing of the character described, thecombination with a retaining; member adapted to be secured to the underside o-f a body bolster or the like, said member being provided with abearing surface on' the interior thereof; of an antifrictioii rocker`element having concentric upper and lower bearing surfaces struck onradii of different length, the upper bearing surfacecorresponding totheshorter radius whereby said element has the center lof weight thereofdisposed below said common center andV is' adapted to bevelevated whenthe rocker is rolled to either side of normal position; a horizontallyextending roller-track carried, bysaid member; a. rollerada}`3ted toroll back and'forth on said track; means for supporting said element onsaid roller; and c'.ooperatingr means on saidmember Iand elementarranged to prevent bodily shifting "of said element with respect tosaid member but permitting free rolling` movement of said element withrespect to said member. l

3. In an anti-friction bearing of the character described, thecombination withy a taining member adapted `to be` securedy to. theunder side of a. body bolster orl the like" and provided on itsunder-side with a horizontally eXtc-indinfg` bearing surface; of ananti-friction rockerelement having upper and' lower concentric bearingsurfaces of different radii,ethe upper. bearing surface i to be securedto the under side of a body bolster or the like, said member beingprovided with a downwardly facing bearing surface; of an anti-frictionelement having upper and lower rounded bearing surfaces and adapted toroll on said bearing "surface of the retaining member, said elementbeing so designed that the center of weight thereof is elevated whenrolled to either side of normal position; a roller-track carried bysaidmember; a roller rotatably journaled on said element and supportedon said track; means for supporting said element from a point above itscenter of weight on said roller; and cooperating mea-ns on said memberand element arranged to prevent bodily shifting of said element withrespect to said member but permitting free rolling movement thereof,rsaid means including, guide grooves provided in said member Aand lugsrigid with said element extending within said grooves.

5. In an anti-friction bearing of the character described, thecombination lwith a retaining member adapted to bel secured to the underside of a body bolster or thelike and provided on its under side with ahorizontally extending bearing surface; of an anti-friction rockerelement having upper and lower concentric bearing surfaces of dil'erentradii, the upper bearing surface corresponding to the shorter radius; ajournal carried by said rocker element and having its axis coincidingwiththe axis of said said lbearing surfaces.

concentric surfaces; a horizontally extend-f ing roller-track carried bysaid member and located below said journal; `a supportingy rollermounted on said track and-said jour-` nal; and cooperating means .onsaid rocker element andsaid member'to insurek centering of lsaid rockerelement relatively to 'said memberupon return of said element after thesame has been actuated, said means in?v cluding, guide grooves providedin said member and lugs rigid with said element extending within saidgrooves.

6. In an anti-friction bearing of the charaoter described, thecombination with a rei taining casting adapted to be secured to the vunder side of va body bolster or the like, s aid casting havingv a`horizontally yextending bearing surface on the interior'thereof and iprovided' with `vertically extending guide grooves on each side thereof,said casting v f' having also depending walls on each. side andhorizontally extending roller-track ele-` ments carried by saiddependingcwallsg of 'an anti-friction `rocker vhaving lconcentric upperand lower bearingsurfaces, the upper surface being struck on a radiusshorter than the lower bearing surface and the cenguide .lugs on eachside of said rocker rigid therewith and cooperating with said guide .terof weight of therocker being disposed below the common center of saidsurfaces; of

ersI coinciding with the common centerof l In witness thatI claim theiforegoingrIv have hereunto subscribed my'name this 29th y Witnesses;

CARRIE GAILING, ANN BAKER,

